セラミックスの強度信頼性評価(第6報) -研削加工損傷への応用- Strength Reliability Evaluation of Ceramics (6th Report) -Application of Ceramics with Grinding Damage-

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The strength reliability of the PSZ ceramics with grinding damages under cyclic loading is evaluated by the crack growth parameters of grinding damage model, which is estimated from the result of fatigue testing. The result of cyclic four point bending test of ceramics specimens with grinding surface shows that the fatigue characteristics depends on the initial crack length and density of cracks caused by grinding. In order to estimate the model of cracks on grinding surface, the initial crack length and the length of crack growth during cyclic bending is measured from the fatigue fractured surface. Also the density of cracks is assumed from an approximated life curve at the fatigue characteristics. And then the crack growth parameters m, C and fatigue fracture toughness value Kfc are calculated using the estimated model of cracks. Further, statistical characteristics of the crack growth parameters for the ceramics with multiple cracks are expressed by Weibull distribution function in the ceramics with single cracks. The evaluated strength reliability agrees with a fatigue characteristics of ceramics with grinding surface under cyclic four point bending. Therefore, it is found that the proposed method in this study is sufficiently effective for the strength reliability evaluation of ceramics with grinding damages.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(6), 789-794, 1996-06-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002012492
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    3976302
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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